DANVILLE, Pa. (AP) — Doctors had a simple goal when they first saw how a football-sized rock thrown from an interstate overpass in central Pennsylvania had shattered parts of Sharon Budd’s skull — keep her alive.

After nearly two weeks, including a marathon surgery lasting more than 13 hours, they are cautiously optimistic.

The Ohio teacher’s arms and legs appear to be moving appropriately, and her brain pressure is normal. But doctors don’t know how her dexterity and fine motor control skills will be affected. It’s likely she won’t regain use of her right eye.

A tube in her brain was removed Monday. Although Budd is somewhat sedated, she’s been able to follow her doctors’ commands, mostly shaking her head or wiggling her fingers and toes.

Four teenagers have been charged in the July 10 rock-throwing, three as adults.